[INFO] updating cached repository nickexton/gh_art
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/nickexton/gh_art
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/nickexton/gh_art" "work/ex/clippy-test-run/sources/stable/gh/nickexton/gh_art"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/nickexton/gh_art'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/nickexton/gh_art" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/nickexton/gh_art"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/nickexton/gh_art'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3101b2639432f47ff836176a480b2c5221838248
[INFO] sha for GitHub repo nickexton/gh_art: 3101b2639432f47ff836176a480b2c5221838248
[INFO] validating manifest of nickexton/gh_art on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of nickexton/gh_art on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing nickexton/gh_art
[INFO] finished frobbing nickexton/gh_art
[INFO] frobbed toml for nickexton/gh_art written to work/ex/clippy-test-run/sources/stable/gh/nickexton/gh_art/Cargo.toml
[INFO] started frobbing nickexton/gh_art
[INFO] finished frobbing nickexton/gh_art
[INFO] frobbed toml for nickexton/gh_art written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/nickexton/gh_art/Cargo.toml
[INFO] crate nickexton/gh_art has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/nickexton/gh_art/Cargo.lock needs to be updated but --locked was passed to prevent this
[ERROR] this task or one of its parent failed!
[ERROR] command `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed